Pole top band



March 29, 1955 o. H. KAMINKY ETAL 2,705,121

POLE TOP BAND Filed Aug. 22. 1951 JNVENTORS United States PatentI O POLETOP BAND Oscar H. Kaminky, Clifford W. Petersen, and George L. Thiry,Milwaukee County, Wis., assignors to McGraw Electric Company, Milwaukee,Wis., a corporation of Delaware Application August 22, 1951, Serial No.243,052

3 Claims. (Cl. 248-230) This invention relates to an improvement in poleband fittings for the attachment of guy wires to wood poles used inpower distribution lines. Experience has proven that the best supportsfor power distribution lines are wood poles as the wood affords anatural dielectric not possible even in steel pylon structure equippedwith insulators. The iiash over value of such distribution lines is veryfavorable and instead of wood poles being outmoded they are now thedesired support for distribution lines. However, wood poles are producedby nature and pose problems of uniformity such as, among other things,the cross-sectional dimensions at the point where they are to be guyed.

Further, the location of the guying anchor on the pole is determined bymany factors such as the terrain and pole distance, which are not alwaysconstant. Uneven stress on the guying anchor often involves seriousdamage to the surface of the pole such as cuts or fractures. Withcontinued uneven stress, the erectness of the poles is often changed.

The need for a pole band ideally suited to the above conditions becameacute and widespread and was not met until the advent of this invention.

One of the objects of this invention is to provide a strong pole bandthat can be adjusted to various sized oles. p Another object of thisinvention is to provide a pole band which can accommodate either asingle or double take oi loop.

And another object is to provide a pole band that will preserve thesurface of the pole and distribute the stress evenly around the pole.

Other objects will appear from time to time in the course of thespecification and claims.

An embodiment of this invention is illustrated in the accompanyingdrawings in which:

Fig. 1 is a perspective view of a pole showing the use of a pole band.

Fig. 2 is a horizontal section through the pole above the pole bandtaken approximately on the line 2--2 of Fi 1.

Fig. 3 is a side view of the pole band with two takeolf loops inserted.

Fig. 4 is a double take-olf loop that can be inserted when needed.

Like reference figures represent like parts in the followingspecification.

It is generally believed advisable to keep attachments for wood electricline poles on the outside of the pole and to use as few entering pointsas possible for electrical safety reasons and so as not to destroy thenatural structure of the wood. Also, it is desirable to provide a poleband that can be attached to a pole with the minimum number of metalinserts into the pole and which can be further adapted to various sizedpoles. Accordingly, this pole band has been invented. It consists of twoapproximately semi-circular bands 1 and 1a clamped together by bolts 2and nuts 3 with single 4 or double take-off loops 4a inserted midwaybetween the bolts 2 on the semi-circular band.

In Figs. 2 and 3 it can be seen that the semi-circular bands 1 and 1ahave ends 5 bent slightly outwardly at a tangent from the circularportion. Each of these end portions 5 has an outwardly depressedpocket-like central section 6 with a perforation 7 where an end lug 8 isinserted and tack welded in place. have openings 9 through which thebolts 2 are inserted.

The end lugs 8 8 2,705,121 Patented Mar. 29, 1955 The nuts 3 with theirassociated washers 14 and locking devices 15 are used to draw the twoclamping bands together so as to lit tightly around the pole.

Special attention is directed to the construction of lug 8 and its modeof cooperation with the depressed pocket section 6 at the ends ofbands 1. Note that the lugs 8 comprise a single piece of metal formedinto a substantial U-shape. f Each leg 23 of the U together with itsbail 20 defines an opening 9 for receiving a bolt 2. The ends of thelegs 23 of the U-shaped lugs 8 are formed into toe 24 and heel 25portions. As seen in Fig. 1, the toe portion 24 is inserted through theperforation 7 in the pocket 6 and rocked upwardly so that it liesagainst the depressed pocket section 6. The heel portion 25, having agreater thickness than the toe portion 24, will not pass throughperforation 7. Rather, when toe portion 24 is disposed upwardly Withinthe pocket 6, as shown in Fig. l, the heel portion 25 depends downwardlyon the outside of the pocket 6 and bears against it in a plane parallelto the toe portion 24. Those skilled in the structural arts willrecognize that lug 8 is mounted as a cantilever within the pocket 7.

Opening 9 of lug 8 is elongated in form so that bolt 2 can be readilyshifted back and forth therein before tightening the two identicalhalves of the clamp around a pole. It should be apparent that the bolts2 must be shifted in opening 9 in a direction away from each other whenthe band is clamped to a large diameter pole and that the opposite istrue when band is clamped to a comparatively small diameter pole.

It will be observed that the surface of the lug 8, upon which the nut 3and head of bolt 2 bear, is kinked to provide at least two separatebearing surfaces 21 and 22. Hence, if the bolt 2 is moved outwardly fromthe center of the pole within opening 9 to accommodate a larger polethan shown in Fig. 1, the nut 3 and head will bear near the end of thelug 8 on surface 22. It follows that the bolt 2`will always be squarewith the lugs 8 and that the bolts will remain parallel to each otherregardless of pole size.

This kinked configuration of the lug 8 further causes the force of bolt2 to be exerted in a line parallel to a tangent to the band 1 to loadthe band in tension throughout and minimize the bending moment in thecantilever lug 8 about its heel 25.

Approximately midway between the ends 5 of the semicircular bands 1 and1a is an outwardly bent transverse portion 10 with a slit opening 11extending across its width in the middle. Through this slit opening 11two L-shaped take-off loops 4 are inserted back to back and the twopieces are fastened to the transverse portion 10 by means of rivets 12.These take-oif loops have openings 16 in their projecting portion andthese openings 16 can be either the single kind 4 as shown in Figs. 2and 3 or the double kind 4a as shown in Fig. 4. If two takeoff loops areneeded, one can be inserted in the transverse portion 10 of eachsemi-circular band. lf only one takeoi loop is needed, a fastening pin13 can be inserted into the pole through the outwardly bent transversesection 10 of one semi-circular band.

With this improved pole band we are able to provide a strong band thatcan be easily clamped around poles of various sizes and tightenedsecurely, and by providing single or double take-off loops midwaybetween the clamping bolts and nuts, the tension on the pole isdistributed evenly around its circumference. Further, it will be notedthat this improved band does not chafe or mar the surface and structureof the wood pole. It is facilely adapted to divers cross-sectionalwidths without any changes or addition of parts to the band itself.

While one preferred embodiment of this invention has been described, itis onlyto be limited by the clear import of the following claims.

We claim:

1. A pole clamping fitting comprising a semicircular band having endportions, said end portions each being depressed to define a pockethaving a perforated wall offset substantially parallel to a tangent tosaid band, substantially U-shaped lugs adjacent each pocket havingspaced legs downwardly kinked and each terminating in o toe and heelportions, said toe portions being disposed through a perforated wall ofone of said pockets, said heel portions bearing on said wall, said legsprojecting from said heel portions and extending radially from said walland spaced relative to each other to provide an elongated bolt receivingopening therein.

2. A pole clamping tting comprising a semicircular band having endportions, a at section integral with said band intermediate said endsand slotted to receive a take-off loop for a guy wire, said end portionseach being depressed to define a pocket having a perforated Wall offsetsubstantially parallel to a tangent to said band, substantially U-shapedlugs adjacent each pocket having spaced legs downwardly kinked and eachterminating in toe and heel portions, said toe portions being disposedthrough a perforated wall of one of said pockets, said heel portionsbearing on said wall, said legs projecting from said heel portions andextending radially from said wall and spaced relative to each other toprovide an elongated bolt receiving opening therein.

3. A pole clamping fitting including two arcuate complementary members,each of said members comprising a substantially semicircular band havingidentical end portions, a dat section intermediate said ends and slottedto receive a take-off loop for a guy wire, each of said end portionsbeing depressed to dene a pocket having a perforated wall offsetsubstantially parallel to a tangent to said band, substantially U-shapedlugs adjacent each pocket and having spaced legs each terminating in toeand heel portions, said toe portions being disposed through a perforatedwall of one of said pockets, said heel portions bearing exteriorly onsaid wall, each of said lugs projecting radially from said wall anddening an elongated bolt receiving aperture having its margins kinkedand in alignment with a like aperture at each end of said complementarymember, and a bolt extending through the apertures of adjacent lugs andretained therein by a nut, whereby said complementary members may bebolted together in clamping relation to a pole.

References Cited in the file of this patent UNITED STATES PATENTS1,522,013 Goodall Ian. 6, 1925 1,798,613 Manson Mar. 31, 1931 1,869,877Austin Aug. 2, 1932 FOREIGN PATENTS 463,096 Germany July 2l, 1928

